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Fig. 7. The dcl1, hen1 and hyl1 mutants show boundary
enlargement. Spacing of the sepals is increased in the mutants (arrows in
F,J,N) compared with wild type (B). This defect is already visible at stage 5
of hyl1-1 and dcl1-9 mutants (arrows in G,K). The expression
domain of a boundary marker (STM::ALCR-alcA::erGFP) is enlarged in
stage 6-7 flowers of hyl1-1 (H) and dcl1-9 (I) mutants
compared with wild type (D). Scale bars: 100 µm.